Liam Rosenior admitted Chelsea paid the price for costly mistakes after Arsenal took advantage of his side's blunders to win 3-2 in the League Cup semi-final first leg.
Gabriel Jesus has been added to Arsenal's Champions League squad as the Brazil striker steps up his long-awaited return from injury.
Mikel Arteta defended injury-hit Arsenal's training methods despite admitting his side are in a "dangerous" situation with their fitness problems.
Arteta fears Arsenal's mounting injury problems will hamper their bid to win the title after Declan Rice and Cristhian Mosquera limped off in win vs Brentford.
Arteta's injury-hit side salvaged a point at Stamford Bridge thanks to Mikel Merino's header in the 59th minute.
Mikel Arteta insisted Arsenal deserved respect after the Premier League leaders battled to a bruising 1-1 draw with title rivals Chelsea at the end of a gruelling week.